Record Code Diff Statistics

[hongjisung]

total code count: 189297
solved case count: 76290
cannot solve case count: 14714
solve at once case count: 44443
a line diff problem case count : 5721
a word diff problem case count : 1910
a line diff case count, can exist multiple pairs in one problem : 6045
a word diff case count, can exist multiple pairs in one problem : 2059
a word diff average seconds, can exist multiple pairs in one problem : 445.492472073